JPH1058038A - Mandrel outer diameter changing device for uncoiling/ coiling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily change an outer diameter of a mandrel in the mandrel outer diameter changing device for uncoiling/coiling device to change an outer diameter of a mandrel by mounting/demounting a sleeve on a mandrel. SOLUTION: Segments 30a-30d of a sleeve 30 have, to the end part of the mandrel drive side, at least one of guides 31a-31d of a taper shape projecting or recessed part. Segments 7a-7d of the mandrel 6 have, to the end part of the mandrel drive side, at least one of positioning guides 32a-32h of a taper shaped projecting or recessed part which are suitable to be fitted in the axial direction to the guides 31a-31d which are included in segments 30a-30d of the sleeve 30, the mandrel shaft 9 is connected to a position controller which rotates the mandrel shaft 9 to a fixed position in the peripheral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of an unwinding and rewinding device used for unwinding and winding a metal band coil, and more particularly, to attaching and detaching a sleeve to and from a peripheral surface of a mandrel of the device. And a device for changing the outer diameter of the mandrel.

[0002]

2. Description of the Related Art A rewinding device for unwinding a coil for processing a metal strip such as rolling, heat treatment, plating, and the like, and a winding device for winding the metal strip into a coil after performing the above-described processing are used.

[0003] In the rewinding device, the coil is loaded after changing the mandrel outer diameter to match the various inner diameters of the coil wound in the previous process. The metal band is wound by changing the outer diameter of the mandrel so that it becomes the inner diameter of the coil.

In order to change the outer diameter of the mandrel of the rewinding device and the winding device, generally, rubber cylindrical sleeves (hereinafter referred to as rubber sleeves) having various outer diameters are prepared, and it is necessary to change the inner diameter of the coil. At the time when the property occurs, the rubber sleeve is mounted, pulled out, and the type is changed to respond to this.

[0005] The attachment and detachment of these sleeves is performed by a detachable device as described in, for example, JP-A-07-246421.

This attaching / detaching device includes a holding arm that can swing up and down, a base arm disposed at the tip of the holding arm, a height adjusting device that adjusts the height of the base frame via the holding arm. And a transfer bed provided with a bed on which a sleeve is mounted on the base frame, a positioning mechanism for positioning the bed at the center of the line, and a moving mechanism for moving the bed in the axial direction of the mandrel.

[0007]

However, in the case of the rubber sleeve, as the service period increases, the contact surface with the coil wears over time, so that the rubber sleeve needs to be replaced periodically.

In particular, in a rewinding device, when a coil whose metal band end is drooped in the coil (especially frequently generated with a material having a small thickness of the metal band) is charged, a rubber sleeve is markedly formed by the drooping metal band end. It may increase the frequency of damage replacement, or in extreme cases, it may bite into the rubber sleeve and cause a telescope-like misalignment between the inner and outer circumferences of the coil, and cut off the misaligned defective part. The yield was reduced.

Therefore, in recent years, a steel split cylindrical sleeve (hereinafter referred to as a steel sleeve) is sometimes used as a substitute for a rubber sleeve.

A steel sleeve is far superior to a rubber sleeve in terms of life, but each of a plurality of segments divided at a plurality of positions in a circumferential direction, which constitute a mandrel of a rewinding device or a winding device. It takes a great deal of time to mount a plurality of similarly divided segments constituting a steel sleeve while aligning in the circumferential direction on the outer peripheral surface of the steel sleeve, and every time a coil having a different coil inner diameter is inserted, And reduced the line processing speed to cope with this. If the matching of the mandrel-side segment group and the steel sleeve-side segment group is not good, the gap between the coil inner diameter and the outer peripheral edge of the steel sleeve segment will be much smaller than in the normal state. , When the coil is inserted, it comes into contact with the inner circumference of the coil, causing a telescope-like misalignment between the inner and outer circumferences of the coil. In extreme cases, the coil may fall in the opposite direction to the coil insertion direction. There is a possibility that a situation may occur that not only damages the device but also causes damage to the equipment.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a device capable of easily and quickly changing the outer diameter of a mandrel of a rewinding device and a winding device.

[0012]

SUMMARY OF THE INVENTION A mandrel outer diameter changing device for a rewinding device according to the present invention holds a segment divided at a plurality of circumferential positions so that the outer diameter can be changed on a mandrel shaft. A mandrel, a sleeve composed of segments divided into a plurality of positions in the circumferential direction, which is externally fitted on the mandrel from the axial direction, and a detachable device for externally fitting and extracting the sleeve with respect to the mandrel. I have.

According to the present invention, in the mandrel outer diameter changing device, for the above purpose, the attaching / detaching device has a sleeve support for storing and storing the sleeve. The segment of the sleeve has at least one tapered convex or concave guide at the end on the mandrel drive side. The mandrel segment has, at the end on the mandrel drive side, at least one tapered concave or convex positioning guide adapted to fit axially with the guide of the sleeve segment. The mandrel shaft is connected to a position control device for rotating the mandrel shaft so as to bring the mandrel shaft to a fixed position in the circumferential direction.

In the mandrel of the present invention having the above-described structure, for example, the sleeve is replaced in the following manner in order to change the outer circumference of the mandrel.

When removing the sleeve from the mandrel, the mandrel is rotated, and the mandrel is stopped at a fixed position in the circumferential direction by the position control device. Next, the sleeve is pulled out from the mandrel in the axial direction by an attaching / detaching device, and stored in the sleeve receiving base. With the mandrel stopped at a fixed position in the circumferential direction, the sleeve is pulled out from the mandrel, and the positional relationship between the sleeve and the mandrel in the circumferential direction is always kept the same between when the sleeve is pulled out and when the sleeve is fitted again.

Therefore, when the sleeve is fitted on the mandrel, the guide for the sleeve is fitted to the positioning guide on the driving side of the mandrel.

Even if the mandrel is slightly shifted from the home position in the circumferential direction and stops, the sleeve slides mutually at the tapered portion between the guide for guiding the sleeve and the positioning guide for the mandrel, thereby causing the sleeve to reach the limit of fitting the mandrel. The sleeve is automatically repositioned to a predetermined circumferential position with respect to the mandrel so that it fits over the mandrel.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a system having one embodiment of the mandrel outer diameter changing device of the present invention.

This system comprises a rewinding device 1 having a mandrel 6, a coil car 11 for attaching and detaching a coil 10 to and from the rewinding device 1, and a coil car 11
And an attachment / detachment device 14 for the sleeve 30 connected to the sleeve 30.

Here, the rewinding device 1 comprises a mandrel 6 and an electric motor 2 for driving the mandrel 6 to rotate.
And an expansion / contraction cylinder 3 for expanding / contracting the mandrel 6 in the radial direction, and a position control cylinder 4 for adjusting the position by moving the apparatus main body on the slide base frame 5.

The coil car 11 and the attaching / detaching device 14
Are moved by the electric motor 12 along the rails 13 so as to approach / separate from the rewinding device 1.

The mandrel 6 comprises a mandrel shaft 9 and mandrel segments 7a to 7d held on the mandrel shaft 9 so that the outer diameter can be changed.

The expansion / contraction cylinder 3 radially expands or contracts the mandrel segments 7a to 7d via the mandrel shaft 9 by reciprocating movements of the expansion / contraction rods 8 (see FIGS. 4 and 5) of the mandrel segments 7a to 7d. It is made to let. The mandrel segments 7a to 7d are reduced before the sleeve 30 is fitted, so that the sleeve 30 can be fitted easily. The mandrel segments 7a to 7d are enlarged after the sleeve 30 is fitted, and are fixed between the sleeve 30 and the sleeve 30. I have.

The motor 2 is provided so as to rotate the mandrel 6 to rewind and wind the coil 10. Further, in the present embodiment, the outer fitting of the sleeve 30 is performed.
It is used to rotate the mandrel 6 to a fixed position in the circumferential direction at the time of extraction.

The attachment / detachment device 14 includes a sleeve support 20 for storing the sleeve 30 and a sleeve support 20.
Cylinder 23 for raising and lowering the cylinder, a guide lot 21 for supporting the sleeve holder 20 for realizing the stable lifting and lowering of the sleeve holder 20, and a guide block 22 for supporting the guide rod 21 vertically slidably. And

As shown in FIGS. 2 and 3, the sleeve receiving base 20 has rolls 24a to 24d for holding the sleeve 30.
And V-shaped sleeve beds 25 a and 25 b for holding both ends of the sleeve 30, and positioning plates 26 a and 26 b for preventing the sleeve 30 from falling off. The rolls 24a to 24d are rotatably installed two on each of the left and right sides of the upper surface of the sleeve receiving base 20 so as to hold the left and right outer peripheral surfaces of the sleeve 30 (the rolls 24b and 24c are hidden positions in FIG. 2). (Not shown).

V-shaped sleeve beds 25a, 25b
Are provided at a support position near both ends in the length direction of the outer peripheral surface of the sleeve 30.

The contact position between the rolls 24a to 24d and the sleeve 30 is set to be equal to or slightly higher than the contact position between the sleeve beds 25a and 25b and the sleeve 30. This is because the sleeve 30 is rotatably supported so that the sleeve 30 is self-centered with respect to the mandrel 6. That is, even if the mandrel 6 is slightly shifted from the circumferential fixed position and stops, when the sleeve 30 is fitted onto the mandrel 6 (see FIG. 4), the tapered portions of the guides 31a to 31d of the sleeve 30 and the mandrel 6 After the tapered portions of the positioning guides 32a to 32h come into contact with each other, the sleeve 30 rotates on the rolls 24a to 24d to be self-centered, and the guides 31a to 3 of the sleeve 30 are rotated.
1d can be completely fitted to the positioning guides 32a to 32h of the mandrel 6.

The positioning plates 26a and 26b are installed at positions supporting both ends of the sleeve 30 in the longitudinal direction. The positioning plates 26a and 26b are used when the sleeve 30 is externally fitted to the mandrel 6 or when the mandrel 6 is used.
When pulling out the sleeve 30 from the sleeve support 20
Is provided to prevent the falling off.

The mandrel segments 7a to 7d
Is divided at a plurality of positions in the circumferential direction (four in this embodiment), and the outer diameter can be changed.

The sleeve 30 is divided into a plurality of circumferentially divided positions (four divided in this embodiment).
a to 30d, and is fitted onto the mandrel 6 from the axial direction.

The sleeve 30 is a steel split cylindrical sleeve. Conventionally, mandrel segments 7a to 7d
In addition, when the sleeve 30 divided in the circumferential direction is externally fitted, a large amount of time is required for circumferential positioning. The present invention has solved this inconvenience. The feature of the present invention is that the guides 31a to 31a are provided on the sleeve segments 30a to 30d.
d, while the mandrel segments 7a to 7d are provided with positioning guides 32a to 32h adapted to be fitted in the guide guides 31a to 31d in the axial direction, and further rotated to bring the mandrel 6 to a fixed position in the circumferential direction. The point is that control devices 33, 34a and 34b (see FIGS. 4 and 5) are provided.

The mandrel segments 7a to 7d and the sleeve segments 30a to 30d have guide guides 31a to 31d and positioning guides 32a to 32h, respectively, for example, as shown in FIGS.

The sleeve segments 30a to 30d are connected to the end of the rewinding device 1 (the end on the mandrel drive side).
One or more tapered convex or concave guides are provided. In the present embodiment, the sleeve segment 30
One convex guide is provided for each segment a to 30d, that is, a total of four guides 31a to 31d are provided to protrude in the axial direction.

On the other hand, the mandrel segments 7a to 7d
Is provided with one or more tapered concave or convex guides at the end of the rewinding device 1 (mandrel driving end). In the present embodiment, as shown in FIG. 4, a pair of concave positioning guides, that is, a total of four pairs of positioning guides 32a to 32h are provided for each of the mandrel segments 7a to 7d. One guide guide, for example, 31d is fitted to a pair of positioning guides, for example, 32g, 32h. In the present embodiment, the guides 31a to 31d have a convex shape, and the positioning guides 32a to 32h have a concave shape. However, the guides may be concave and the positioning guides may have a convex shape.

As shown in FIG. 4, the guide guides 31a to 31d and the positioning guides 32a to 32h have the same taper angle θ so that they can be in close contact with each other. Furthermore, this taper angle θ is such that when the amount of circumferential deviation from the home position of the mandrel 6 is maximum,
It is necessary to set the angle so that the tapered portions of the guides 31a to 31d and the tapered portions of the positioning guides 32a to 32h can be partially contacted. Specifically, the taper angle θ may be about 30 ° to 120 °.

Further, the position control device, that is, the mandrel 6
In the present embodiment, as shown in FIGS. 4 and 5, a striker installed at one position at the end of the rewinding device 1 of the mandrel segments 7a to 7d is used as a device for stopping the motor at a fixed position in the circumferential direction. 33 and proximity switches 34a and 34b installed in the rewinding device 1.

The striker 33 is fixed by protruding one in the radial direction of the mandrel segments 7a to 7d. The two proximity switches 34a and 34b are installed on switch receiving bases 35a and 35b that are sequentially arranged in the rotation direction of the mandrel 6 in the rewinding device 1 (clockwise direction in FIG. 5 in the present embodiment). ing. The proximity switch 34a on the upstream side along the rotation direction of the mandrel 6 is provided for switching the rotation speed of the mandrel 6, and the proximity switch 34b on the downstream side is provided for detecting the stop position of the mandrel 6.

When the striker 33 passes through the proximity switch 34a with the rotation of the mandrel 6, a signal for switching the rotation speed of the mandrel 6 to a low speed is output. Then, at a position where the striker 33 overlaps the other proximity switch 34b, the mandrel 6 is rotated. Is controlled by a microcomputer or the like so as to output a signal for stopping the operation.

In this embodiment, an example in which two proximity switches are provided has been described. However, it is sufficient that at least one proximity switch is provided. When only one proximity switch is installed, it is used for detecting the mandrel stop position. If two or more are installed,
The last one switch in the mandrel rotation direction is used for detecting the mandrel stop position, and the other upstream switches are used for switching the mandrel rotation speed. (If there are two or more mandrel rotation speed switches, stepwise Slow down).

The mandrel outer diameter changing device of the present invention comprises a mandrel 6 for holding mandrel segments 7a to 7d having positioning guides 32a to 32h on a mandrel shaft 9 and a segment 3 having guide guides 31a to 31d.
0a to 30d and a detachable device 20 to
23, and the position control devices 33, 34a, and 34b.

According to the mandrel outer diameter changing device configured as described above, the outer diameter of the mandrel 6 is changed as follows.

As an operation for changing the outer diameter of the mandrel 6, when the sleeve 30 is externally fitted to the mandrel 6, when the sleeve 30 is pulled out from the mandrel 6, the sleeve 3
A case where 0 is replaced with a different outer diameter will be described. Case in which Sleeve 30 is Externally Fitted on Mandrel 6 First, a case in which the sleeve 30 is externally fitted on the mandrel 6 will be described as an example.

The electric motor 12 moves the coil car 11 and the sleeve support 20 along the rail 13 so as to approach the rewinding device 1 and stops at a position where the mandrel 6 does not interfere.

Next, the sleeve receiving base 20 is moved up and down using the elevating cylinder 23, and stopped at a height where the axis of the sleeve 30 coincides with the axis of the mandrel 6.

Next, an operation of externally fitting the sleeve 30 to the mandrel segments 7a to 7d in the axial direction is performed.

To explain this external fitting operation in detail, first, the mandrel 6 is rotated using the electric motor 2 and stopped at a fixed position in the circumferential direction. That is, as the mandrel 6 rotates clockwise in FIG. 5, the strikers 33 installed in the mandrel segments 7a to 7d rotate. Then, when the striker 33 passes through the proximity switch 34a provided in the rewinding device 1, the rotation speed of the mandrel 6 is switched to a low speed. Next, striker 3
When the position 3 overlaps with the other proximity switch 34b, the electric motor 2 is stopped, and the rotation of the mandrel 6 is stopped. Thereby, the mandrel 6 is accurately stopped at a fixed position in the circumferential direction.

Next, the mandrel segments 7a to 7d are reduced in the radial direction using the expansion / contraction cylinder 3, and
The sleeve 30 is easily fitted to the outside.

Next, using the electric motor 12, the sleeve receiving base 20 is further moved toward the rewinding and winding device 1 side.
The sleeve 30 is fitted over the mandrel segment 7.

However, there are cases where the mandrel 6 stops slightly from the home position in the circumferential direction.

Even when the mandrel 6 and the sleeve 30 are displaced in the circumferential direction, when the sleeve 30 is moved in the axial direction toward the mandrel 6, the guides 31a to 31d of the sleeve segments 30a to 30d are provided. Partially contacts the tapered portions of the positioning guides 32a to 32h of the mandrel segments 7a to 7d.

Thereafter, due to the force of the sleeve 30 toward the mandrel 6, the sleeve 30 slightly rotates on the rolls 24a to 34d of the sleeve receiving base 20, and the mandrel 1
Self-centered against. That is, the guides 31a to 31d of the sleeve 30 are completely fitted together with the positioning guides 32a to 32h of the mandrel 6 while sliding smoothly with each other.

As a result, as shown in FIG. 6, the sleeve segments 30a to 30d are connected to the mandrel segments 7a to 7d.
It can be fitted completely on 7d without circumferential displacement. That is, the mandrel segments 7a to 7d and the sleeve segment 30 which have conventionally occurred as shown in FIG.
The circumferential displacement between the positions a to 30d has disappeared. Accordingly, there is no contact trouble between the inner peripheral side of the coil 10 and the outer peripheral side of the sleeve 30 due to the circumferential displacement between the mandrel segments 7a to 7d and the sleeve segments 30a to 30d.

The sleeve segments 30a to 30d
The time required for the operation of changing the outer diameter of the mandrel 6 can be greatly reduced as compared with the conventional example in which the mandrel segments 7a to 7d are externally fitted while being circumferentially aligned. That is, the present invention, which conventionally took 60 to 115 seconds, can be reduced to, for example, about 35 seconds by the present invention, and the line processing speed is reduced.
It was confirmed that it could contribute to productivity improvement.

After the external fitting of the sleeve 30 to the mandrel 6 is completed, the sleeve receiving base 20 is lowered by using the lifting cylinder 23. Further, the mandrel segments 7a to 7d are radially expanded by using the expansion / contraction cylinder 3 to fix the space between the mandrel 6 and the sleeve 30, and the expansion is stopped when the sleeve 30 reaches a predetermined outer diameter. I do. When pulling out the mandrel 6 from the sleeve 30 When pulling out the sleeve 30 which has been externally fitted to the mandrel 6, the operation reverse to the above-mentioned fitting operation may be performed.

In this case, after the mandrel 6 is stopped at a fixed position in the circumferential direction, the sleeve 30 is pulled out from the mandrel 6 in the axial direction. The circumferential positional relationship of the sleeve 30 with respect to the mandrel 6 is always kept constant on the sleeve support 20. Replace the sleeve 30 with the mandrel 6
Also, when the mandrel 6 is stopped at a fixed position in the circumferential direction, the sleeve 30 having a predetermined positional relationship with the mandrel 6 is fitted outside the mandrel 6 in the axial direction. Therefore, the sleeve 30 can be externally fitted in a completely matched state with no circumferential displacement with respect to the mandrel 6. When Replacing the Sleeves 30 There are a plurality of sleeves 30 having different outer diameters. When replacing the sleeves, for example, as many sleeve holders 20 as the number of sleeves 30 are arranged, and
What is necessary is just to provide the moving device which can slide 0 in the direction which crosses in front of the mandrel 6 (direction perpendicular to the paper surface of FIG. 1). Then, using this moving device, after the axis of the sleeve 30 on the sleeve receiving table 20 containing the sleeve 30 having the desired outer diameter is made to coincide with the axis of the mandrel 6, the motor 12
The sleeve 30 can be replaced by moving the sleeve 30 so as to approach or separate from the mandrel 6 using.

[0058]

As described above, according to the mandrel outer diameter changing device for the rewinding device of the present invention, after the mandrel is stopped at a fixed position in the circumferential direction by the position control device, the sleeve is moved to the mandrel. From the sleeve to keep the circumferential positional relationship of the sleeve with respect to the mandrel always constant. Also, when the mandrel is stopped at a fixed position in the circumferential direction even when the sleeve is fitted outside, the sleeve having a predetermined positional relationship with the mandrel is fitted over the mandrel, so that there is no circumferential displacement of the sleeve with respect to the mandrel. Can be fitted externally in a state that is matched to

Even if the mandrel is stopped at a position slightly shifted in the circumferential direction from the fixed position, the tapered guide of the sleeve and the tapered positioning guide of the mandrel slide on each other at the tapered portion to completely slide. Therefore, the sleeve can be automatically corrected to a predetermined position where the sleeve is completely aligned with the mandrel without circumferential displacement.

That is, the outer diameters of the mandrels of the rewinding device and the winding device can be easily and quickly changed.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an entire system having an embodiment of a mandrel outer diameter changing device according to the present invention.

FIG. 2 is an enlarged front view of a sleeve receiving base of the mandrel outer diameter changing device of FIG. 1;

FIG. 3 is a left side view of the sleeve support of FIG. 2;

FIG. 4 is a front view showing a state in which the sleeve is fitted on the mandrel.

FIG. 5 is a right side view of the fitted state structure of FIG. 4;

FIG. 6 is a sectional view showing a state in which the sleeve is normally fitted on the mandrel.

FIG. 7 is a cross-sectional view showing a state where the sleeve is displaced in the circumferential direction and is externally fitted.

[Explanation of symbols]

 Reference Signs List 1 rewinding device 2 motor for mandrel rotation 6 mandrel 7a to 7d mandrel segment 9 mandrel shaft 10 coil 11 coil car 14 attaching / detaching device 20 sleeve receiving base 21 guide rod 22 guide block 23 lifting cylinder 24a to 34d roll 30 sleeve 30a 30d Sleeve segment 31a-31d Guide 32a-32h Positioning guide 33 Striker (position control device) 34a, 34b Proximity switch (position control device)

Claims (1)

[Claims] 1. A mandrel holding a segment divided at a plurality of circumferential positions on a mandrel shaft so as to be able to change the outer diameter, and a segment divided at a plurality of positions in the circumferential direction on the mandrel. In a mandrel outer diameter changing device including a sleeve externally fitted from the axial direction and a detachable device for externally fitting and extracting the sleeve with respect to the mandrel, the detachable device has a sleeve receiving base for storing and storing the sleeve, The segment of the mandrel has at least one tapered convex or concave guide at the end on the mandrel drive side, and the segment of the mandrel has at the end on the mandrel drive side the guide and the guide of the sleeve segment. A mandrel having at least one tapered concave or convex positioning guide adapted to fit into the mandrel A mandrel outer diameter changing device for a rewinding device, wherein the shaft is connected to a position control device that rotates the mandrel shaft to a fixed position in a circumferential direction.